Properties of the Number 64197

Sixty-Four Thousand One Hundred Ninety-Seven

Basics

Value: 64196 → 64197 → 64198

Parity: odd

Prime: No

Previous Prime: 64189

Next Prime: 64217

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 1019

Divisors: 1, 3, 7, 9, 21, 63, 1019, 3057, 7133, 9171

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111101011000101

Octal: 175305

Duodecimal: 31199

Hexadecimal: fac5

Square: 4121254809

Square Root: 253.371269089453

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Irregular triangle read by rows: T(n,k) is the number of n-permutations whose second-shortest cycle has length exactly k; n >= 0, 0 <= k <= max(0,n-1). A349980

Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero. A298723

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero. A298727

a(n) = 27*(n-1)*(n-2)*(n-3)*(3·n-8)/2. A64197